Runs the scala-steward-action daily to ensure dependencies across the Scala Center stay up to date.
PRs are sent in by the scala-center-steward[bot] app. You can see an example
of what a pr looks like here.
Edit the repos.md file.
NOTE: This steward instance is only for scalacenter org repos. If you're
outside of the org and would like to run Steward on your repos check out
diy-steward.